Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*hahtuz
→
Faroese
háttur
(derived)
→
Westrobothnian
hått
(inherited)
→
Icelandic
háttur
(derived)
→
Old Norse
háttr
(inherited)